Battery assembly



FIG. 1 is a front view of a battery assembly, showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left view thereof;

FIG. 4 is a right view thereof;

FIG. 5 is an enlarged top view thereof;

FIG. 6 is an enlarged bottom view thereof; and,

FIG. 7 is a perspective view thereof.

The broken lines present in the figures are included for the purpose of illustrating portions of the battery assembly which form no part of the claimed design. 

CLAIM The ornamental design for a battery assembly, as shown and described. 